缓倾斜破碎薄矿体高效采矿技术及应用
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摘要
缓倾斜破碎薄矿体具有倾角缓、厚度薄及矿体和顶板破碎的特点,是地下开采中典型的难采矿体之一。鑫汇金矿Ⅰ号脉为倾角25°、厚度0.63~6.14 m、中间厚两翼薄的缓倾斜破碎薄矿体。针对其复杂的矿体形态和不同区域的围岩稳固性,对采场进行了合理分区,设计不同布置形式的上向水平进路充填采矿法和多种顶板支护方式。在为期4个月的工业试验中,取得了较好的经济技术指标:采场生产能力46.46 t/d,矿石贫化率13.51%,采矿损失率3.68%。该采矿方法应用效果较为理想,保证了采场的稳定与安全,可为同行在此类矿床的研究中提供借鉴。
Moderately inclined broken thin ore body is one of the typical ore bodies difficult for underground mining,characterized by moderate dip angles,thinness and broken ore bodies and roofs.OrebodyⅠin Xinhui Gold Mine is a moderately inclined broken thin ore body with dig angle 25°,thickness 0.63-6.14 m,thick center and thin wings.In light of the fact that the ore body morphology and the wall rock stability in different sections vary,the paper sectioned the stope in a reasonable way,designed in different layouts the upward horizontal approach and fill mining method as well as many roof supporting manners.In a 4-month industrial test,the technology achieved good economic index: the stope production capacity is 46.46 t/d,ore dilution rate 13.51 % and mining loss rate 3.68 %.The method has satisfactory application outcome,guarantees stope stability and safety and can be used as reference by peers for the mining of similar ore bodies.
Moderately inclined broken thin ore body is one of the typical ore bodies difficult for underground mining,characterized by moderate dip angles,thinness and broken ore bodies and roofs.OrebodyⅠin Xinhui Gold Mine is a moderately inclined broken thin ore body with dig angle 25°,thickness 0.63-6.14 m,thick center and thin wings.In light of the fact that the ore body morphology and the wall rock stability in different sections vary,the paper sectioned the stope in a reasonable way,designed in different layouts the upward horizontal approach and fill mining method as well as many roof supporting manners.In a 4-month industrial test,the technology achieved good economic index: the stope production capacity is 46.46 t/d,ore dilution rate 13.51 % and mining loss rate 3.68 %.The method has satisfactory application outcome,guarantees stope stability and safety and can be used as reference by peers for the mining of similar ore bodies.
引文
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[3]杨德全.采矿方法选择及其数值模拟研究[J].采矿技术,2009,9(3):12-14.
[4]郭旺.缓倾斜薄矿体采矿方法创新设计与采动损伤过程模拟[D].长沙:中南大学,2012.
[5]王来军,薛田喜,陈涛,等.缓倾斜薄矿体采矿方法的研究[J].黄金科学技术,2003,11(3):44-47.
[6]徐从贵.缓倾斜极薄矿脉废石条柱胶结连续分条采矿法的应用[J].中小企业管理与科技(上旬刊),2010(4):246-247.
[7]况世华,何丽华.缓倾斜极薄矿脉开采新方法研究[J].云南冶金,2009,38(1):10-14.
[8]芦世俊.缓倾斜薄矿脉分条推进连续出矿高效采矿工艺[J].金属矿山,2010(10):17-19.
[9]周科平,翟建波,高峰,等.缓倾斜薄矿体采场伪倾斜布置及参数优化研究[J].广西大学学报(自然科学版),2012,37(2):376-381.
[10]梁乃跃,杨鹏,吕文生,等.伪倾斜单采尾砂胶结充填采矿法在缓倾斜薄矿体开采中的应用[J].有色金属(矿山部分),2012,64(4):6-9.
[11]熊有为.缓倾斜破碎薄矿体盘区机械化进路充填采矿方法研究[J].采矿技术,2016,16(5):1-2.
[12]王素银,张旭宇.缓倾斜薄矿体采矿方法探讨[J].甘肃冶金,2007,29(1):33-35.
[13]陈琼.全面房柱法在锡矿山薄矿体开采中的实践[C]∥山西省有色金属行业协会.2008(太原)首届中西部十二省市自治区有色金属工业发展论坛论文集.太原:山西省有色金属行业协会,2008:108-110.
[14]郭金峰,王汉生.南非Tweefontein铬矿缓倾斜薄矿体开采技术实践与评述[J].金属矿山,2010(2):18-21.
[15]曹伟建.浅谈缓倾斜薄矿体开采方案与研究[J].世界有色金属,2016(11):132-133.
[16]曹帅.胶结充填体结构与动力学特性研究及应用[D].北京:北京科技大学,2017.